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Debt - Long-term Debt (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Nov. 02, 2020 | Sep. 30, 2020 | Aug. 12, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 3,387 |  | $ 3,104 |  |
3.000% Senior Secured Notes due 2031 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 3.00% |  |  |  | 3.00%
Acquisition Corp. | Senior Term Loan Facility due 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 815 |  | 814 |  |
Acquisition Corp. | 3.625% Senior Secured Notes due 2026 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 545 |  | 521 |  |
Interest rate | 3.625% |  |  |  |
Acquisition Corp. | 2.750% Senior Secured Notes due 2028 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 392 |  | 375 |  |
Interest rate | 2.75% |  |  |  |
Acquisition Corp. | 3.875% Senior Secured Notes due 2030 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 529 |  | 529 |  |
Interest rate | 3.875% |  |  |  |
Acquisition Corp. | 3.000% Senior Secured Notes due 2031 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 784 |  | 544 |  |
Interest rate | 3.00% | 3.00% |  | 3.00% |
Acquisition Corp. | 5.500% Senior Notes due 2026 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 322 |  | 321 |  |
Interest rate | 5.50% |  |  |  |
Acquisition Corp. | Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total long-term debt, including the current portion | $ 0 |  | $ 0 |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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